#include<stdlib.h>
#include<stdbool.h>


typedef struct {
    int* a;
    int front;
    int rear;
    int k;
} MyCircularQueue;


MyCircularQueue* myCircularQueueCreate(int k) {
    MyCircularQueue* obj = (MyCircularQueue*)malloc(sizeof(MyCircularQueue));

    obj->a = (int*)malloc((k + 1) * sizeof(int));
    obj->front = obj->rear = 0;
    obj->k = k;

    return obj;
}

bool myCircularQueueIsEmpty(MyCircularQueue* obj) {
    if (obj->front == obj->rear)
        return true;
    else
        return false;
    //return obj->front == obj->rear;
}

bool myCircularQueueIsFull(MyCircularQueue* obj) {
    return (obj->rear + 1) % (obj->k + 1) == obj->front;
}

bool myCircularQueueEnQueue(MyCircularQueue* obj, int value) {
    if (myCircularQueueIsFull(obj))
    {
        return false;
    }
    else
    {
        obj->a[obj->rear] = value;
        obj->rear = (obj->rear + 1) % (obj->k + 1);
        return true;
    }
}

bool myCircularQueueDeQueue(MyCircularQueue* obj) {
    if (myCircularQueueIsEmpty(obj))
    {
        return false;
    }
    else
    {
        obj->front = (obj->front + 1) % (obj->k + 1);
        return true;
    }
}

int myCircularQueueFront(MyCircularQueue* obj) {
    if (myCircularQueueIsEmpty(obj))
    {
        return -1;
    }
    else
        return obj->a[obj->front];
}

int myCircularQueueRear(MyCircularQueue* obj) {
    if (myCircularQueueIsEmpty(obj))
    {
        return -1;
    }
    else
    {
        return obj->a[(obj->rear - 1 + obj->k + 1) % (obj->k + 1)];
    }
}

void myCircularQueueFree(MyCircularQueue* obj) {
    free(obj->a);
    free(obj);
    obj = NULL;
}

int main()
{
    MyCircularQueue mq;
    myCircularQueueCreate(4);
    myCircularQueueIsEmpty(&mq);
}
/**
 * Your MyCircularQueue struct will be instantiated and called as such:
 * MyCircularQueue* obj = myCircularQueueCreate(k);
 * bool param_1 = myCircularQueueEnQueue(obj, value);

 * bool param_2 = myCircularQueueDeQueue(obj);

 * int param_3 = myCircularQueueFront(obj);

 * int param_4 = myCircularQueueRear(obj);

 * bool param_5 = myCircularQueueIsEmpty(obj);

 * bool param_6 = myCircularQueueIsFull(obj);

 * myCircularQueueFree(obj);
*/